On Thu, Sep 2, 2021 at 9:05 PM Edwin blink <[email protected]> wrote:
> Hi Stefan > > > > Thanks for explaining. I think I understand now. The higher octave channel > must be changed before a full period has passed. A full period @ 61Hz(8MHz > / 2^17 ) is ~16.4 ms. > > doing a delay of 192 scanlines is ~12.31ms which is good enough. This > delay method was probably chosen as it is a convenient way to generate the > required delay. > > > And thank you for filling in my missing link. Internally the SAA will also be operating at some frequency, so cannot just start a note whenever you like, but will also be limited to "slots" when they can start, so as long as you are near enough you will get 100% phase cancellation. Cool. :-)
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